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A kind of calcareous farmland soil water-retaining agent and its preparation method and application

A soil water-retaining agent and calcareous technology, which is applied in the field of calcareous farmland soil water-retaining agent and its preparation, can solve the problems of inconvenient use in field, small area of ​​water-retaining agent, pollution of the environment, etc., to inhibit water loss and promote water-retaining performance , Improve the effect of soil water

Active Publication Date: 2020-05-22
HENAN AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing chemical water-retaining agents generally need to be dug, buried or covered with soil and fully irrigated. In practical application, there are disadvantages such as high cost, environmental pollution, and inconvenient use in field. Therefore, in fact, water-retaining agents are used in calcareous soil farmland. the area is very small

Method used

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  • A kind of calcareous farmland soil water-retaining agent and its preparation method and application
  • A kind of calcareous farmland soil water-retaining agent and its preparation method and application
  • A kind of calcareous farmland soil water-retaining agent and its preparation method and application

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preparation example Construction

[0038] The present invention provides the preparation method of the calcareous farmland soil water-retaining agent described in the above scheme, comprising the following steps:

[0039] (1) grease and potassium hydroxide solution are mixed, make grease and potassium hydroxide carry out incomplete saponification reaction, obtain potassium stearate-grease mixture;

[0040] (2) dissolving fulvic acid and molasses in water and mixing with the potassium stearate-grease mixture, followed by heat preservation treatment and filtration to obtain a calcareous farmland soil water retaining agent.

[0041] The invention mixes the oil and potassium hydroxide solution, and makes the oil and potassium hydroxide undergo incomplete saponification reaction to obtain the potassium stearate-oil mixture. The present invention preferably heats the oil, adds part of the potassium hydroxide solution under heat preservation conditions and stirs for 20-40 minutes, more preferably 30 minutes, then adds...

Embodiment 1

[0054] (1) 1 mass part of waste oil with a saponification value of 180 mg KOH / g is placed in the container, and the temperature is raised to 85 ° C at a rate of 10 ° C / min; 0.1 to 0.12 mass parts potassium hydroxide is formulated into a 30 wt % solution, and In the state of heat preservation, add 1 / 2 volume of potassium hydroxide solution into the oil and stir for 30 minutes, then add the remaining volume of potassium hydroxide solution, and continue stirring for 1 hour to obtain a thick liquid mixture of stearic acid and oil;

[0055] (2) Mix 0.1 parts by mass of fulvic acid and 0.1 parts by mass of molasses after sterilization in 10 parts of deionized water, then add to the thick liquid mixture of stearic acid and oil obtained in step (1), and keep at 40°C In a warm state, stir for 2 hours, then stand still for 1 hour, cool to room temperature and filter to obtain a calcareous farmland soil water retaining agent.

Embodiment 2

[0057] Other conditions are identical with embodiment 1, only change the mass parts of fulvic acid and molasses into 0.01 part and 0.5 part.

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Abstract

The invention provides a calcareous farmland soil water-retaining agent and its preparation method and application, belonging to the field of water-retaining agents. The water-retaining agent provided by the invention is prepared from oil, potassium hydroxide, fulvic acid, molasses and water; the mass ratio of the oil, potassium hydroxide, fulvic acid, molasses and water is 1: (0.1-0.12): (0.01~0.1): (0.1~0.5): (0.5~0.7). The water-retaining agent of the present invention can significantly improve the problems of severe evaporation and serious deep-layer leakage caused by large pores and strong permeability of sandy soil; Field use can also effectively inhibit the rapid degradation of straw, increase the accumulation of organic matter, and promote the increase of wheat production.

Description

technical field [0001] The invention relates to the technical field of water-retaining agents, in particular to a calcareous farmland soil water-retaining agent and its preparation method and application. Background technique [0002] In the North China Plain and Northwest China, there is a large area of ​​calcareous soil developed on the weathered limestone crust. The water resources in this area are short of water, and most of them are arid and semi-arid agricultural ecosystems. The area of ​​sandy soil and sandy loam soil in this area is relatively large. Agricultural planting in this type of soil The biggest obstacle is its insufficient water retention capacity. The sandy soil has a loose structure, low organic matter content, lack of nutrients, serious leakage of water and fertilizer, and belongs to medium and low-yield fields. At present, the shortage of water resources has become an urgent problem to be solved in restricting the agricultural production of calcareous ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/32C09K101/00
CPCC09K17/32C09K2101/00
Inventor 李培培韩燕来姜瑛李慧申凤敏汪强
Owner HENAN AGRICULTURAL UNIVERSITY